most 100% cocoa powder is vegan which is great for baking
it is also good for making hot chocolate
I believe the original nesquick syrup is vegan to (sadly they advocate milk quite a bit) and so is the waldens farms chocolate syrup if you want walk to add that to some vegan milk for hot chocolate
I’m pretty sure most dark chocolate is vegan as it doesn’t have milk in it. As long as it is pure dark chocolate there are also other forms of of chocolate I believe made with like rice and nuts and things just like they make vegan milk.